The Apple-FBI Fight Isn’t About Privacy vs. Security. Don’t Be Misled | WIRED

Without considering the technical concept explicitly described as
'backdoor', is the following a true statement?

"“It would be great if we could make a backdoor that only the FBI could
walk through,” says Nate Cardozo, an attorney with the Electronic Frontier
Foundation. “But that doesn’t exist. And literally every single
mathematician, cryptographer, and computer scientist who’s looked at it has
agreed.”

Source: http://www.wired.com/2016/02/apple-fbi-privacy-security/